Ignition Coil and Iridium Spark Plugs for Ford Transit (2015-2017) 3.7L

High-Reliability Ignition Coil and Iridium Spark Plug Service Kit for 2015-2017 Ford Transit

Direct-Replacement Ignition Overhaul: Restores factory secondary ignition output and optimal combustion efficiency across all six cylinders on high-mileage fleet and commercial applications.

The Stock Transit Cyclone Coil Degradation

Under continuous commercial duty cycles, the Ford Duratec 37 engine bay experiences sustained thermal loading. Factory ignition coil boots harden and develop micro-fissures over time, allowing high-voltage flashover to ground rather than discharging across the plug gap. Combined with standard electrode erosion on factory plugs, this causes unburnt fuel pass-through, low-load misfires under heavy payload acceleration, rough idling, and catalytic converter fouling.

The Engineering Solution

This 6-cylinder ignition service kit pairs heavy-duty coil-on-plug (COP) assemblies with fine-wire iridium spark plugs. The ignition coils feature high-purity internal copper windings vacuum-potted in dielectric epoxy resin to eliminate internal arcing and withstand prolonged thermal cycling. Precision blade terminals and OEM-geometry primary connectors ensure moisture-sealed continuity. The matched iridium plugs resist thermal ablation, requiring lower ionization voltage while maintaining a stable, concentrated spark kernel under load.

Technical Specifications

Compatibility

• 2015 Ford Transit-150 / Transit-250 / Transit-350 / Transit-350 HD (3.7L V6 Gas)
• 2016 Ford Transit-150 / Transit-250 / Transit-350 / Transit-350 HD (3.7L V6 Gas)
• 2017 Ford Transit-150 / Transit-250 / Transit-350 / Transit-350 HD (3.7L V6 Gas)

The Ford Fleet Durability Standard

Engineered to handle severe commercial service, extended idle times, and maximum gross vehicle weight ratings (GVWR) without misfires, thermal breakdown, or uncommanded check engine lights.